First commit in branch

builder.sh

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+#!/usr/bin/bash
+
+set -x 
+set -e
+PASSWD_FILE=/home/narenas/passwd
+DIR=$(pwd) 
+CHROOT_DIR=$DIR/chroot 
+DIST=noble
+VARIANT=minbase
+CLEAN=${CLEAN:-1}
+CLEAN_CHROOT=${CLEAN_CHROOT:-1}
+OUTPUT_DIR=/media/sf_Downloads/
+
+
+## FUNCIONES
+function exec_as_sudo () {
+    cat $PASSWD_FILE | sudo -S $@ 
+}
+
+function exec_as_sudo_in_chroot () {
+    exec_as_sudo chroot $CHROOT_DIR $@
+}
+
+function umount_in_chroot() {
+    if grep $CHROOT_DIR$1 /etc/mtab;
+    then
+        echo "Unmounting $1"
+        exec_as_sudo_in_chroot umount $1
+        return $?
+    fi
+    echo "Mount point $1 not found"
+    return 0 
+}
+
+function umount_in_host() {
+    if findmnt -M $1
+    then
+        echo "Unmounting $1"
+        exec_as_sudo umount $1
+        return $?
+    fi
+    echo "Mount point $1 not found"
+    return 0 
+}
+
+
+if [ -d $CHROOT_DIR ] && [ $CLEAN -eq 1 ];
+then
+    SYS_MOUNT_POINT_CHROOT="/proc /sys /dev/pts /dev" 
+    SYS_MOUNT_POINT="$CHROOT_DIR/dev $CHROOT_DIR/run"
+    for i in $SYS_MOUNT_POINT_CHROOT;
+    do
+        umount_in_chroot $i
+    done
+    
+    for i in $SYS_MOUNT_POINT;
+    do
+        umount_in_host $i
+    done
+    # exec_as_sudo_in_chroot umount /proc
+    # exec_as_sudo_in_chroot umount /sys
+    # exec_as_sudo_in_chroot umount /dev/pts
+    # exec_as_sudo umount $CHROOT_DIR/dev
+    # exec_as_sudo umount $CHROOT_DIR/run
+    if [ $CLEAN_CHROOT -eq 1 ];
+    then 
+        exec_as_sudo rm -rf $CHROOT_DIR
+    fi
+    exec_as_sudo rm -rf image
+    exec_as_sudo rm -f $OUTPUT_DIR/ubuntu-from-scratch.iso
+fi 
+
+mkdir -p $CHROOT_DIR
+# # Copio el script chroot_setup.sh al directorio chroot
+cp chroot_setup.sh $CHROOT_DIR
+chmod +x $CHROOT_DIR/chroot_setup.sh
+
+# # Deploy boot strap 
+if [ $CLEAN_CHROOT -eq 1 ];
+then
+    exec_as_sudo debootstrap --arch=amd64 --variant=$VARIANT $DIST $CHROOT_DIR http://us.archive.ubuntu.com/ubuntu/ 
+fi
+exec_as_sudo mkdir -p $CHROOT_DIR/etc/calamares/
+exec_as_sudo cp -r calamares/* $CHROOT_DIR/etc/calamares/
+
+# # Create mount points
+exec_as_sudo mount --bind /dev/ $CHROOT_DIR/dev
+exec_as_sudo mount --bind /run/ $CHROOT_DIR/run
+
+
+# Execute chroot_setup.sh
+exec_as_sudo_in_chroot /chroot_setup.sh
+
+
+# Clean up the environment
+umount_in_host $CHROOT_DIR/dev
+umount_in_host $CHROOT_DIR/run  
+
+# Compress the chroot 
+exec_as_sudo mv chroot/image . 
+
+# Create squashfs imagesudo
+exec_as_sudo mksquashfs $CHROOT_DIR image/casper/filesystem.squashfs \
+    -noappend -no-duplicates -no-recovery \
+    -wildcards \
+    -comp xz -b 1M -Xdict-size 100% \
+    -e "var/cache/apt/archives/*" -e "root/*" -e "root/.*" -e "tmp/*" -e "tmp/.*" -e "swapfile"
+
+printf $(exec_as_sudo du -sx --block-size=1 chroot | cut -f1) | sudo tee image/casper/filesystem.size
+
+# Create ISO image
+
+cd image && \
+exec_as_sudo xorriso \
+   -as mkisofs \
+   -iso-level 3 \
+   -full-iso9660-filenames \
+   -J -joliet-long \
+   -volid "Ubuntu_scratch" \
+   -output $OUTPUT_DIR/ubuntu-from-scratch.iso \
+   -eltorito-boot isolinux/bios.img \
+     -no-emul-boot \
+     -boot-load-size 4 \
+     -boot-info-table \
+     --eltorito-catalog boot.catalog \
+     --grub2-boot-info \
+     --grub2-mbr ../chroot/usr/lib/grub/i386-pc/boot_hybrid.img \
+     -partition_offset 16 \
+     --mbr-force-bootable \
+   -eltorito-alt-boot \
+     -no-emul-boot \
+     -e isolinux/efiboot.img \
+     -append_partition 2 28732ac11ff8d211ba4b00a0c93ec93b isolinux/efiboot.img \
+     -appended_part_as_gpt \
+     -iso_mbr_part_type a2a0d0ebe5b9334487c068b6b72699c7 \
+     -m "isolinux/efiboot.img" \
+     -m "isolinux/bios.img" \
+     -e '--interval:appended_partition_2:::' \
+   -exclude isolinux \
+   -graft-points \
+      "/EFI/boot/bootx64.efi=isolinux/bootx64.efi" \
+      "/EFI/boot/mmx64.efi=isolinux/mmx64.efi" \
+      "/EFI/boot/grubx64.efi=isolinux/grubx64.efi" \
+      "/EFI/ubuntu/grub.cfg=isolinux/grub.cfg" \
+      "/isolinux/bios.img=isolinux/bios.img" \
+      "/isolinux/efiboot.img=isolinux/efiboot.img" \
+      "."
+cd ..

calamares/settings.conf

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+---
+
+modules-search: 
+- local
+- /usr/lib/x86_64-linux-gnu/calamares/modules
+
+sequence: 
+- show: 
+    - welcome
+    - locale
+    - keyboard
+    - partition
+    - users
+    - summary
+- exec: 
+    - partition
+    - packagechooser
+    - machineid
+    - locale
+    - keyboard
+    - users
+    - bootloader 
+- show: 
+    - finished 
+
+
+branding: default 
+prompt-install: false
+dont-chroot: false
+oem-setup: false
+disable-cancel: false
+hide-back-and-next-during-exec: false
+disable-cancel-during-exec: false
+quit-at-end: false

chroot_setup.sh

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+#!/bin/bash 
+
+set -x
+set -e
+export HOME=/root
+export LC_ALL=C
+
+function setup_sources_list () {
+    echo "Setting up sources.list"
+    cat <<EOF > $CHROOT_DIR/etc/apt/sources.list
+deb http://us.archive.ubuntu.com/ubuntu/ noble main restricted universe multiverse
+deb-src http://us.archive.ubuntu.com/ubuntu/ noble main restricted universe multiverse
+
+deb http://us.archive.ubuntu.com/ubuntu/ noble-security main restricted universe multiverse
+deb-src http://us.archive.ubuntu.com/ubuntu/ noble-security main restricted universe multiverse
+
+deb http://us.archive.ubuntu.com/ubuntu/ noble-updates main restricted universe multiverse
+deb-src http://us.archive.ubuntu.com/ubuntu/ noble-updates main restricted universe multiverse
+EOF
+    apt update -y 
+    apt-get -y upgrade
+}
+
+function configure_divert() {
+    echo "Configuring divert"
+    dbus-uuidgen > /etc/machine-id
+    ln -fs /etc/machine-id /var/lib/dbus/machine-id
+    dpkg-divert --local --rename --add /sbin/initctl
+    ln -s /bin/true /sbin/initctl    
+}
+
+function mount_proc_sys_dev() {
+    echo "Mounting proc, sys and dev"
+    mount -t proc proc /proc
+    mount -t sysfs sys /sys
+    mount -t devpts devpts /dev/pts
+}
+
+function install_packages() {
+    echo "Installing packages"
+    apt install -y $@
+}
+
+
+function set_pkg_configuration() {
+    echo "keyboard-configuration keyboard-configuration/layout select Spanish"  | debconf-set-selections
+    echo "keyboard-configuration keyboard-configuration/variant select Spanish" | debconf-set-selections
+    echo "keyboard-configuration keyboard-configuration/xkb-keymap select es"   | debconf-set-selections
+}
+
+function install_non_interactive() {
+    echo "Installing packages non interactive"
+    apt install -y -o Dpkg::Options::="--force-confdef" -o Dpkg::Options::="--force-confold" $@
+}
+
+function install_no_recommends() {
+    echo "Installing packages without recommends"
+    apt install -y --no-install-recommends $@
+}
+
+function setup_chroot() {
+    echo "Setting up chroot"
+    dbus-uuidgen > /etc/machine-id
+    apt update -y
+    ln -fs /etc/machine-id /var/lib/dbus/machine-id
+    ln -s /bin/true /sbin/initctl
+}
+
+function remove_unneeded_packages() {
+    echo "Removing unneeded packages"
+    apt remove -y --purge --auto-remove snapd
+}
+
+function reconfigure_locales() {
+    echo "Configuring locales"
+    sed -i 's/# es_ES.UTF-8 UTF-8/es_ES.UTF-8 UTF-8/' /etc/locale.gen
+    sed -i 's/# en_US.UTF-8 UTF-8/en_US.UTF-8 UTF-8/' /etc/locale.gen
+    locale-gen
+    ln -sf /usr/share/zoneinfo/Europe/Madrid /etc/localtime
+    echo "Europe/Madrid" > /etc/timezone
+    dpkg-reconfigure -f noninteractive tzdata
+}
+
+function reconfigure_network_manager() {
+    echo "Configuring network manager"
+    mkdir -p /etc/NetworkManager
+    cat <<EOF > /etc/NetworkManager/NetworkManager.conf
+[main]
+rc-manager=none
+plugins=ifupdown,keyfile
+dns=systemd-resolved
+
+[ifupdown]
+managed=false
+EOF
+
+    mkdir -p /etc/NetworkManager/system-connections/
+    cat <<EOL > /etc/NetworkManager/system-connections/dhcp-all.nmconnection
+[connection]
+id=Auto DHCP
+type=ethernet
+autoconnect=true
+
+[ipv4]
+method=auto
+EOL
+
+    systemctl enable NetworkManager
+}
+
+function reconfigure_packages() {
+    reconfigure_locales
+    reconfigure_network_manager
+}   
+
+function create_image() {
+    mkdir -p /image/{casper,isolinux,install}
+    cp /boot/vmlinuz-**-**-generic /image/casper/vmlinuz
+    cp /boot/initrd.img-**-**-generic /image/casper/initrd
+    wget --progress=dot https://memtest.org/download/v7.00/mt86plus_7.00.binaries.zip -O /image/install/memtest86.zip
+    unzip -p /image/install/memtest86.zip memtest64.bin > /image/install/memtest86+.bin
+    unzip -p /image/install/memtest86.zip memtest64.efi > /image/install/memtest86+.efi
+    rm -f /image/install/memtest86.zip
+}
+
+
+function configure_grub_menu() {
+    touch /image/ubuntu 
+    cat <<EOF > /image/isolinux/grub.cfg
+
+search --set=root --file /ubuntu
+
+insmod all_video
+
+set default="0"
+set timeout=30
+
+menuentry "Install Ubuntu FS" {
+   linux /casper/vmlinuz boot=casper quiet splash ---
+   initrd /casper/initrd
+}
+
+menuentry "Check disc for defects" {
+   linux /casper/vmlinuz boot=casper integrity-check quiet splash ---
+   initrd /casper/initrd
+}
+
+grub_platform
+if [ "\$grub_platform" = "efi" ]; then
+menuentry 'UEFI Firmware Settings' {
+   fwsetup
+}
+
+menuentry "Test memory Memtest86+ (UEFI)" {
+   linux /install/memtest86+.efi
+}
+else
+menuentry "Test memory Memtest86+ (BIOS)" {
+   linux16 /install/memtest86+.bin
+}
+fi
+EOF
+    # Generate manifest 
+    dpkg-query -W --showformat='${Package} ${Version}\n' | sudo tee /image/casper/filesystem.manifest
+    cp -v /image/casper/filesystem.manifest /image/casper/filesystem.manifest-desktop
+    sed -i '/ubiquity/d' /image/casper/filesystem.manifest-desktop
+    sed -i '/casper/d' /image/casper/filesystem.manifest-desktop
+    sed -i '/discover/d' /image/casper/filesystem.manifest-desktop
+    sed -i '/laptop-detect/d' /image/casper/filesystem.manifest-desktop
+    sed -i '/os-prober/d' /image/casper/filesystem.manifest-desktop 
+
+    # Create diskdefines  
+    cat <<EOF > /image/README.diskdefines
+#define DISKNAME  Ubuntu from scratch
+#define TYPE  binary
+#define TYPEbinary  1
+#define ARCH  amd64
+#define ARCHamd64  1
+#define DISKNUM  1
+#define DISKNUM1  1
+#define TOTALNUM  0
+#define TOTALNUM0  1
+EOF
+
+}
+
+function create_image2(){ 
+    cp /usr/lib/shim/shimx64.efi.signed.previous /image/isolinux/bootx64.efi
+    cp /usr/lib/shim/mmx64.efi /image/isolinux/mmx64.efi
+    cp /usr/lib/grub/x86_64-efi-signed/grubx64.efi.signed /image/isolinux/grubx64.efi
+    cd /image/isolinux && \
+    dd if=/dev/zero of=efiboot.img bs=1M count=10 && \
+    mkfs.vfat -F 16 efiboot.img && \
+    LC_CTYPE=C mmd -i efiboot.img efi efi/ubuntu efi/boot && \
+    LC_CTYPE=C mcopy -i efiboot.img ./bootx64.efi ::efi/boot/bootx64.efi && \
+    LC_CTYPE=C mcopy -i efiboot.img ./mmx64.efi ::efi/boot/mmx64.efi && \
+    LC_CTYPE=C mcopy -i efiboot.img ./grubx64.efi ::efi/boot/grubx64.efi && \
+    LC_CTYPE=C mcopy -i efiboot.img ./grub.cfg ::efi/ubuntu/grub.cfg && \
+    # Create a grub bios images
+    cd /image && \
+    grub-mkstandalone \
+        --format=i386-pc \
+        --output=isolinux/core.img \
+        --install-modules="linux16 linux normal iso9660 biosdisk memdisk search tar ls" \
+        --modules="linux16 linux normal iso9660 biosdisk search" \
+        --locales="" \
+        --fonts="" \
+        "boot/grub/grub.cfg=isolinux/grub.cfg"
+
+    cat /usr/lib/grub/i386-pc/cdboot.img isolinux/core.img > isolinux/bios.img
+    # find . -type f -print0 | xargs -0 md5sum | grep -v -e 'isolinux' > md5sum.txt
+
+}
+
+function clean (){ 
+    truncate -s 0 /etc/machine-id
+    rm /sbin/initctl
+    dpkg-divert --rename --remove /sbin/initctl
+    apt-get clean
+    rm -rf /tmp/* ~/.bash_history
+    umount /proc
+    umount /sys
+    umount /dev/pts
+    export HISTSIZE=0
+}
+
+
+function autostart_calamares() {
+    mkdir -p /etc/xdg/openbox
+    echo <<EOF > /etc/xdg/openbox/autostart
+calamares & 
+EOF
+}
+
+
+function configure_lightdm() {
+    mkdir -p /etc/lightdm
+    cat <<EOF > /etc/lightdm/lightdm.conf
+[Seat:*]
+autologin-user=root
+autologin-user-timeout=0
+user-session=openbox
+greeter-session=lightdm-gtk-greeter
+
+EOF
+}
+
+function install_mesa_repo() {
+    add-apt-repository ppa:kisak/kisak-mesa
+    apt -y update
+}
+
+
+## Main 
+echo "ubuntu-fs-live" > /etc/hostname
+mount_proc_sys_dev
+setup_sources_list
+install_packages libterm-readline-gnu-perl systemd-sysv software-properties-common
+setup_chroot
+set_pkg_configuration
+install_mesa_repo
+install_packages sudo ubuntu-standard sudo casper dbus-bin mesa-utils  mesa-vulkan-drivers discover  isc-dhcp-client  laptop-detect   unzip  os-prober    network-manager    net-tools    wireless-tools    wpagui    locales    grub-common    grub-gfxpayload-lists    grub-pc    grub-pc-bin    grub2-common    grub-efi-amd64-signed    shim-signed    mtools    binutils  virtualbox-guest-utils virtualbox-guest-x11
+install_non_interactive xorg xinit openbox lightdm plymouth calamares
+install_no_recommends linux-image-generic
+configure_divert
+configure_lightdm
+autostart_calamares
+remove_unneeded_packages
+reconfigure_packages
+create_image
+configure_grub_menu
+create_image2
+clean